86783746725 has 72 divisors (see below), whose sum is σ = 167739909792. Its totient is φ = 42636585600.

The previous prime is 86783746657. The next prime is 86783746733. The reversal of 86783746725 is 52764738768.

86783746725 is a `hidden beast` number, since 86 + 78 + 3 + 7 + 467 + 25 = 666.

It is not a de Polignac number, because 86783746725 - 2⁷ = 86783746597 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1405962 + ... + 1466388.

Almost surely, 2^86783746725 is an apocalyptic number.

It is an amenable number.

86783746725 is a deficient number, since it is larger than the sum of its proper divisors (80956163067).

86783746725 is a wasteful number, since it uses less digits than its factorization.

86783746725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60947 (or 60939 counting only the distinct ones).

The product of its digits is 94832640, while the sum is 63.

The spelling of 86783746725 in words is "eighty-six billion, seven hundred eighty-three million, seven hundred forty-six thousand, seven hundred twenty-five".